Complaint against SBI field officer

Location/place: Jaisingh nagar, Dist.-Shahdol (M.P.)

Name of company/service: SBI

I am Yogesh payasi s/o shri Suresh Chandra payasi a/c no. 30456828848 have been becoming the victim of mental ill by Mr. abhisek shrivastava field officer sbi branch jaisinghnagar shahdol. I borrowed education loan of one lakhs fourteen hundred from sbi jaisinghnagar. but I could not pay the installment within time, so have to bear over burden of interest that is approx. eight thousand rupees. i am son of farmer and still unemployed due to sum personal problems. On date 19 nov. 2012 Mr. abhised kept my account on hold. my account is source of my earning. but i could not use my ac. because of Mr. abhisek’s taken action on my account. next day i requested him withdraw hold from my account so that i may continue keep pace with my earning and become to pay. the installment determined by sbi for my loan , on the request he told me the installment is fixed around twenty six hundred when i agreed to pay three thousand per month (which is four hundred more then twenty six hundred) but suddenly he refused to agree on what he sad and begin demanding twenty one thousand rupees at one go. When I requested him again that this lump-sum amount is out of my capacity at one go I may pay only in installment of three thousand rupees per month. he refused my request and replied mannerlessly for not withdraw the hold from my accounts, until I pay him twenty one thousand lump -sum , he also insulted me before other customers and his staff , and made me and my family issue of laugh.
please sir kindly suggest me what to do.
i have cleared it earlier it also that I am unemployed and poor and also become very depressive (by Mr. abhisek’s behavior) so i can’t manage to pay twenty one thousand and if the hold is not withdrawn my a/c I may not earn what i am use to earning and become enable to pay even installment of three thousand under this condition i am extremely depressed.
It is so kind of you if you guide me to get out from this situation which may harm me.
Thank You